Methods and apparatus for implementing over-temperature fault protection in wearable devices and other electronic devices
AssigneeIntel Corporation
InventorDEVIN CASS
Life of this patent
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Abstract
Methods and apparatus for implementing over-temperature fault protection in wearable devices and other electronic devices are disclosed herein. An example apparatus includes a voltage source; a thermistor bias network to, when enabled, output a thermistor voltage; an over-temperature determiner to enable the thermistor bias network; and, when the thermistor voltage corresponds to a temperature above a maximum temperature threshold, output a fault; and an isolation transistor to couple the voltage source to a system; and when the over-temperature determiner outputs the fault, decouple the voltage source from the system.
Claims20
An apparatus comprising:
- a voltage source;
- a thermistor bias network to, when enabled, output a thermistor voltage;
- an over-temperature determiner to:
- enable the thermistor bias network;
- and
- when the thermistor voltage corresponds to a temperature above a maximum temperature threshold, output a fault;
- and
- an isolation transistor to:
- couple the voltage source to a system;
- and
- when the over-temperature determiner outputs the fault, decouple the voltage source from the system.
An apparatus comprising:
- a comparator to provide an output voltage based on a comparison of a thermistor voltage to a reference voltage;
- a logic gate to, when at least one of a bit sequence or a shifted bit sequence is a first voltage, output a second voltage to at least one of (A) enable a thermistor bias network or (B) enable the comparator;
- and
- a fault determiner to, when the shifted bit sequence is the first voltage and the output voltage corresponds to a temperature above a maximum temperature threshold, output a fault.
A method comprising:
- toggling a thermistor bias network on and off to enable or disable the thermistor bias network;
- when the thermistor bias network is enabled, receiving a thermistor voltage from the thermistor bias network;
- when the thermistor voltage corresponds to a temperature above a maximum temperature threshold, decoupling a voltage source from a system.
Dependencies are inferred from the claim text.